Clinical Eye Movement
Simulation & Training

A browser-based platform for students, clinicians and educators to study nystagmus patterns and practice the complete oculomotor examination. Nystagmus.io lets you slow it down and see it again.

Now you've seen it, now you know.

Start Learning → Explore Features

Built for Clinical Education

Realistic simulations of eye movement disorders with adjustable parameters, real-time visualization, and comprehensive oculomotor exam protocols

🌀

Nystagmus Patterns⌄

Ten physiologically accurate patterns, fully tunable — amplitude, speed, even Alexander's law.

Horizontal Right or Left Beat
Upbeat / Downbeat
Torsional-Upbeat Right or Left
Pendular
See-Saw
Square-Wave Jerks
Periodic Alternating (PAN)

🩺

Oculomotor Exam Suite⌄

The complete bedside exam, simulated: pursuit, saccades, skew, convergence, head thrust, and more.

Smooth Pursuit
Saccades (hyper- and hypometric)
Skew Deviation (cover test)
Convergence
Lateral Head Thrust
Gaze-Evoked Nystagmus
Positional (Dix-Hallpike / Supine Roll)
VOR Cancellation

📈Real-Time Graphing • 🎬Video Recording • 🎛️Customizable Parameters • 📱Mobile-Friendly •

Who Is This For?

Designed for medical education at every stage, from classroom to bedside

🎓 Students

Learn to recognize different nystagmus patterns and understand the oculomotor examination before seeing real patients.

Visual learning of abstract concepts
Self-paced practice
No patient required

🏥 Clinicians

Demonstrate findings to patients, create teaching materials, or refresh your knowledge of specific eye movement disorders.

Patient education tool
Case presentation aid
Continuing education

📚 Educators

Enhance your teaching with interactive demonstrations. Show students exactly what to look for during the exam.

Classroom demonstrations
Record examples for lectures
Standardized teaching cases

Modern, Accessible Technology

Built with modern web standards for maximum accessibility and ease of use. No downloads, no installations, no accounts required.

Runs entirely in your browser—no software to install
Works on any device: desktop, tablet, or phone
Offline-capable: use it anywhere, even without internet
Privacy-first: all processing happens locally on your device
Regular updates with new features and improvements
Open development: feedback welcome from the medical community

nystagmus.io app showing the torsional-upbeat nystagmus simulation with adjustable amplitude, torsion, and speed controls, plus a live eye-position graph

Browser-Based Platform

Simply open the app in any modern browser and start learning. Your work is saved locally, and you can export recordings for presentations or documentation.

Ready to Master Eye Movements?

Nystagmus is hard to pronounce — and harder to catch. Real patients blink, squint, or can't tolerate repeat testing, and your window to see it clearly is short. Nystagmus.io never blinks, never tires, and is ready to run again the moment you need it.